One of those tidbits includes an encounter with Taylor Swift where he mentioned Katy Perry during the Met Ball this year. According to Cohen, Swift was searching for a spot near the bar to watch Lady Gaga's performance when the Watch What Happens Live host saw an unoccupied area around Perry.

"Why I felt I needed to get involved I will never know (maybe I was auditioning for her squad?) but I innocently said exactly the wrong thing to her, which was, 'Your friend Katy is sitting in the corner and there's plenty of room around her,'" he recalls.

Cohen says Swift then asked, "Katy who?"

"I said, 'Perry,' at which point she clearly let me know that she's the exact opposite of her friend," he continues. Cohen says he then tried to make light of his misstep, which led Swift to instruct him not to mention this on his show.